If you have some time to spare, stop over at battambang. You can enjoy bamboo train over there. It's something that you can't find anywhere else. And the scenery is super gooding. I was awed by it. Besides bamboo train, visit Phnom sampeu. At night, enjoy the circus show. Theirs circus show is performed by students and the proceed from the show goes to them as well. Besides the show, you may opt to have buffet dinner at the circus compound. Food is nothing to shout about, but the little $$ we give them goes a long way.

How long is your trip black pen?